Using COR function in Piggybank results in ERROR 2018: Internal error. Unable
to introduce the combiner for optimization
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Key: PIG-2286
URL: https://issues.apache.org/jira/browse/PIG-2286
Project: Pig
Issue Type: Bug
Components: impl, piggybank
Affects Versions: 0.9.0
Reporter: Viraj Bhat
Usage of the COR function in a Pig script, results in an error. The
"studenttab5" contains student, age and gpa separated by "tab".
{code}
register /home/viraj/pig-svn/trunk/contrib/piggybank/java/piggybank.jar;
A = LOAD '/user/viraj/studenttab5' AS (name, age:double,gpa:double);
B = group A all;
C = foreach B generate group, COR(A.a, A.b);
dump C;
{code}
{verbatim}
2011-09-14 17:03:22,001 [main] INFO
org.apache.pig.backend.hadoop.executionengine.HExecutionEngine - Connecting to
hadoop file system at: hdfs://localhost:9000
2011-09-14 17:03:22,088 [main] INFO
org.apache.pig.backend.hadoop.executionengine.HExecutionEngine - Connecting to
map-reduce job tracker at: localhost:9001
2011-09-14 17:03:22,960 [main] INFO org.apache.pig.tools.pigstats.ScriptState
- Pig features used in the script: GROUP_BY
2011-09-14 17:03:23,168 [main] INFO
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MRCompiler - File
concatenation threshold: 100 optimistic? false
2011-09-14 17:03:23,179 [main] INFO
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.CombinerOptimizer
- Choosing to move algebraic foreach to combiner
2011-09-14 17:03:23,186 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR
2018: Internal error. Unable to introduce the combiner for optimization.
{verbatim}
Viraj
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